CN205692608U - High fire-retardance fire safe type lv power cable - Google Patents

High fire-retardance fire safe type lv power cable Download PDF

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Publication number
CN205692608U
CN205692608U CN201620344447.5U CN201620344447U CN205692608U CN 205692608 U CN205692608 U CN 205692608U CN 201620344447 U CN201620344447 U CN 201620344447U CN 205692608 U CN205692608 U CN 205692608U
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China
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fire
retardant
layer
flame
retardance
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CN201620344447.5U
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王子纯
姚勰
缪旭伦
徐亚东
陈彩云
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Jiangsu Dongqiang Co Ltd
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Jiangsu Dongqiang Co Ltd
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Abstract

The utility model discloses a kind of high fire-retardance fire safe type lv power cable, including cable core, this cable core is made up of three fire retardant insulating heart yearns and flame resistant filler layer, described three fire retardant insulating heart yearns are embedded in flame resistant filler layer, are coated with fire-resistant lapping layer, fire-retardant lapping layer and flame retardant insulation on the conductor of described fire retardant insulating heart yearn the most successively;Described cable core is surrounded with fire-retardant belting layer, fire-retardant belting layer is extruded with oxygen barrier layer, this oxygen barrier layer is extruded with external sheath layer.Described conductor has three, and these three conductors lay respectively on three summits of same equilateral triangle, and the flame retardant insulation cylindrical outside three conductors is tangent.This cable is the most fire-retardant, fire resistance good, and mechanical strength is excellent, and chemical stability is good, environment friendly and pollution-free.It is particularly well-suited to have relatively high fire-retardance grade and the use occasion of fire resistant requirements.

Description

High fire-retardance fire safe type lv power cable
Technical field
This utility model relates to a kind of power cable, particularly relates to a kind of low-voltage power with the fire-resistant function of highly effective flame-retardant Cable.
Background technology
The dependence of electric power is got more and more by the modern life, in modern architecture cable as power transmission circuit can not or Lack.It is continuously increased along with skyscraper, hospital, hotel, station and airport etc., and subway, urban track traffic, large-scale public The construction of facility, the importance of security against fire highlights the most day by day, and in building, the amount of laying of cable is doubled and redoubled, and building is opened Beginning to use fire resistant flame retardant cable to be powered imperative, as fire-resisting cable, flame retardant coating is under flame or hot conditions, not only Want flame-retardant, and to have higher thermal insulation to ensure that external high temperature does not damage built-in electrical insulation, it is ensured that cable is after catching fire The integrity of circuit in certain time.
Common insulated cable fire resistance is poor, and resistant against high temperatures and flame etc. use environment hardly, and commonly hinder The flame-retardant temperature of combustion cable is the highest, and duration of fire resistance falls short of, and affect cable under high temperature, the corrosivity adverse circumstances such as by force Continuous firing, and major part cable only has fire-retardant or fire-resistant simple function, is extremely difficult to same cable and can reach fire-retardant A Class hierarchy, can reach again 1200 DEG C of fire resistance test conditions.In addition, during burning, cable also can produce substantial amounts of poisonous and harmful gas Body and smog, can cause harm, these fire resistant flame retardant cables most existing greatly to the life of environment, equipment and personnel Being again the poor hard cable of bending property, not readily transportable and construction is laid, and bending radius is relatively big, typically at least needs 20 times of electricity Cable diameter, brings many difficulties to the mounting and installation of cable.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of high fire-retardance fire safe type lv power cable, and it is not only Fire-retardant, fire resistance good, mechanical strength is excellent, and chemical stability is good, environment friendly and pollution-free.
In order to solve above-mentioned technical problem, high fire-retardance fire safe type lv power cable of the present utility model, including cable core, should Cable core is made up of three fire retardant insulating heart yearns and flame resistant filler layer, and described three fire retardant insulating heart yearns are embedded in flame resistant filler layer In, the conductor of described fire retardant insulating heart yearn is coated with the most successively fire-resistant lapping layer, fire-retardant lapping layer and fire-retardant absolutely Edge layer;Described cable core is surrounded with fire-retardant belting layer, fire-retardant belting layer is extruded with oxygen barrier layer, this oxygen barrier layer is extruded with External sheath layer.
After using said structure, owing to being respectively coated by the fire-resistant lapping layer and high flame retardant having high fire resistance rating outside conductor The fire-retardant lapping layer of energy so that cable conductor can transmit electric energy safely and reliably in high fire-resistant and high fire-retardance condition, and in resistance It is extruded with again flame retardant insulation outside combustion lapping layer, not only makes conductor core wire define reliable insulating properties, and defined The thermal-shock resistance of effect and the self-extinguishment feature of environmental protection.Again owing to, outside the cable core that constituted at conductor core wire, being surrounded with fire-retardant belting layer, Both stablized the structure of cable conductor, there is again high flame retardant;Being extruded with oxygen barrier layer on fire-retardant belting layer, this oxygen barrier layer can reach To fire-retardant effect, under the ablation of flame, a few minutes just can reach to give up smoking completely, even if in ensuing ablation process In, the material such as produced carbon dioxide and water does not have smog and produces, and is innocuous substance, and extrude in oxygen barrier layer outer protects Jacket layer, as fire-retardant the first line of defence, can reduce the generation of heat, promotes that insulation and sheath material form protective layer, can stop With the haptoreaction of the combustibles such as oxygen, the most effectively block heat and transmit in cable, can be under flame hot conditions Guarantee in long period that cable continues energising and keeps properly functioning.More due in structure of the present utility model, on cable core Fire-retardant belting layer, oxygen barrier layer and external sheath layer assume responsibility for more fire-retardant self-extinguishment effect, stop heat to cable most possibly Cable core transmits, defines first flame-retardant defence line, there is good flame retardant effect, and be coated with on conductor core wire Fire-resistant lapping layer, fire-retardant lapping layer and flame retardant insulation define second flame-retardant defence line, thus constitute the fire-retardant of multiple tracks With fire-resistant defence line and double effects.The setting of flame resistant filler layer in cable core, not only enhances the flame-retardant performance of cable, improves The fire-retardant rank of cable, and make cable have preferable roundness, improve positional stability and the tension of insulation core wire Intensity.
A kind of preferred implementation of the present utility model, described conductor has three, and these three conductors lay respectively at first-class On three summits of limit triangle, and the flame retardant insulation cylindrical outside three conductors is tangent.This structure advantageously ensures that cable is relatively Good roundness and the Stability Analysis of Structures of insulated wire cores.
A kind of preferred implementation of the present utility model, described fire-resistant lapping layer uses fire-resistant isinglass belt double-layer overlapping wrapped Forming, its Duplication is 50%-60%.Use fire-resistant isinglass belt fire resistance good, etc. fire resistance rating high, refractory temperature is up to 1200 DEG C, wrapped bilayer and overlapping wrapped can preferably play mica tape effect, will not cause waste, have again reliable fire resistance Can, mica tape generates insoluble white hard insulation shell silicon dioxide after meeting fire, has good electrical insulating property, it is ensured that cable continues Continuous energising.
A kind of preferred implementation of the present utility model, described fire-retardant lapping layer uses low-smoke non-halogen flame-retardant band double-layer overlapping Wrapped forming, this non-antiflaming band of low cigarette, with glass fabric as base material, is constituted at glass fabric coating magnesium hydroxide.Have High flame retardant.
A kind of preferred implementation of the present utility model, described flame retardant insulation is low-smoke non-halogen flame-retardant silanes crosslinked cable Material extrudes layer.There is good mechanical performance, electrical property and chemical stability.
A kind of preferred implementation of the present utility model, described flame resistant filler layer is filled by glass rope and is formed.Glass fibre Gasket for packing has high flame retardant, it is ensured that energising safety.
A kind of preferred implementation of the present utility model, described flame resistant filler layer includes region, heart portion and border region, the heart Region, portion is the flame retardant insulation cylindrical area defined outside three conductors, is filled with chemical fiber filament, limit in this region Region, portion then filled glass fiber rope.This structure makes cable have high flame retardant, has again relatively high tensile ability.
A kind of preferred implementation of the present utility model, described outer jacket is that low smoke halogen-free flame-retardant polyolefin extrudes and forms. Make cable have some strength, thermal-shock resistance and electrical property good, and have without low cigarette, effect of environmental protection self-extinguishment.
Accompanying drawing explanation
With detailed description of the invention, this utility model high fire-retardance fire safe type lv power cable is made into one below in conjunction with the accompanying drawings Step explanation.
Fig. 1 is the structural representation of this utility model high fire-retardance a kind of detailed description of the invention of fire safe type lv power cable.
In figure, 1 conductor, 2 fire-resistant lapping layers, 3 fire-retardant lapping layers, 4 flame retardant insulation, 5 flame resistant filler layers, 6 fire-retardant belting layers, 7 oxygen barrier layers, 8 external sheath layers.
Detailed description of the invention
In the fire-resistant lv power cable of the high fire-retardance shown in Fig. 1, the cable core of this cable by three fire retardant insulating heart yearns and Flame resistant filler layer 5 is constituted, and three fire retardant insulating heart yearns are embedded in flame resistant filler layer 5 equably.Every fire retardant insulating heart yearn bag Include conductor 1, conductor 1 has been coated with fire-resistant lapping layer 2, fire-retardant lapping layer 3 and flame retardant insulation 4 the most successively, resistance to It is wrapped and formed that fire lapping layer 2 uses fire-resistant isinglass belt to carry out double-layer overlapping, and the wrapped Duplication of fire-resistant isinglass belt should control Between 50%-60%, the most both there is good fire resistance, be unlikely to again to cause the waste of mica tape.Fire-retardant lapping layer 3 uses Low-smoke non-halogen flame-retardant band carries out that double-layer overlapping is wrapped to be formed, and this low-smoke non-halogen flame-retardant band is with glass fabric as base material, at glass It is coated with magnesium hydroxide in glass fiber cloth and constitutes, it is also possible to be on glass fabric, coat the cured rear shape of anti-flammability glue Become, so make it have high flame retardant.Flame retardant insulation 4 extrudes with low-smoke non-halogen flame-retardant silanes crosslinked cable material and forms, low cigarette Halogen-free flame-retardant organosilane cross-linked CABLE MATERIALS is with vistanex as base material, and adds fire retardant and compatilizer, uses crosslinked with silicane Prepared by method, polyolefin has good mechanical performance, electrical property and a chemical stability, good processability, crosslinked after poly- Alkene impact property, heat resistance, electrical insulation capability and resisting environmental stress and cracking all can improve.
The centre of form of three conductors of three fire retardant insulating heart yearns lays respectively on three summits of same equilateral triangle, leads Body is circular copper conductors.The cross section of the flame retardant insulation 4 outside three conductors is also circular, the cylindrical of its three flame retardant insulation 4 Tangent, it is filled with chemical fibre in the region, heart portion that three flame retardant insulation 4 cylindricals of three fire retardant insulating heart yearns are surrounded long Silk, to strengthen the tensile property of cable, the border region outside region, cable core heart portion is then filled with glass cord, to reach good Good fire resistance.In addition to this structure, flame resistant filler layer 5 can also be all to be filled by glass cord to form.
The cable core of cable is surrounded with fire-retardant belting layer 6, this fire-retardant belting layer 6 is extruded with oxygen barrier layer 7, in oxygen barrier It is extruded with external sheath layer 8 on layer 7.Fire-retardant belting layer 6 is formed by low-smoke non-halogen flame-retardant band is wrapped, this low-smoke non-halogen flame-retardant band be Impregnate fire retardant glue on glass fiber tape and formed, fire-retardant belting layer 6 extrudes ceramic silica gel and constitutes oxygen barrier layer 7, pottery SiClx rubber can form self-supporting ceramic body, and blocking oxygen in flame, self produces moisture, absorbs heat, reaches to stop Propagation of flame and the purpose of self-extinguishment, have certain flexual strength and pressure wears intensity, does thermal impact good, low smoke, zero halogen, self-extinguishment, Environmental protection, and the production technology of fire-resisting cable can be simplified, reduce cost.Oxygen barrier layer 7 is extruded with low smoke halogen-free flame-retardant polyolefin And constitute external sheath layer 8.
Above the specific embodiment of this utility model patent is illustrated and illustrates, but this utility model patent is not only It is limited to above example, all equivalent transformations made according to this utility model patent, all should be in this utility model scope of patent protection Within.

Claims (10)

1. a high fire-retardance fire safe type lv power cable, including cable core, this cable core is by three fire retardant insulating heart yearns and fire-retardant fills out Fill layer (5) constitute, described three fire retardant insulating heart yearns are embedded in flame resistant filler layer (5), it is characterised in that: described fire-retardant absolutely Fire-resistant lapping layer (2), fire-retardant lapping layer (3) and flame retardant insulation it is coated with the most successively on the conductor (1) of edge heart yearn (4);Described cable core is surrounded with fire-retardant belting layer (6), fire-retardant belting layer (6) is extruded with oxygen barrier layer (7), in this oxygen barrier layer (7) external sheath layer (8) it is extruded with on.
High fire-retardance fire safe type lv power cable the most according to claim 1, it is characterised in that: described conductor (1) has three Root, these three conductors (1) lay respectively on three summits of same equilateral triangle, and the fire retardant insulating that three conductors (1) are outward Layer (4) cylindrical is tangent.
High fire-retardance fire safe type lv power cable the most according to claim 1, it is characterised in that: described fire-resistant lapping layer (2) using that fire-resistant isinglass belt double-layer overlapping is wrapped forms, its Duplication is 50%-60%.
High fire-retardance fire safe type lv power cable the most according to claim 1, it is characterised in that: described fire-retardant lapping layer (3) using that low-smoke non-halogen flame-retardant band double-layer overlapping is wrapped forms, this low-smoke non-halogen flame-retardant band is with glass fabric as base material, at glass Glass fiber cloth coats magnesium hydroxide and constitutes.
High fire-retardance fire safe type lv power cable the most according to claim 1, it is characterised in that: described flame retardant insulation (4) it is that low-smoke non-halogen flame-retardant silanes crosslinked cable material extrudes layer.
High fire-retardance fire safe type lv power cable the most according to claim 1, it is characterised in that: described flame resistant filler layer (5) formed by the filling of glass rope.
High fire-retardance fire safe type lv power cable the most according to claim 1, it is characterised in that: described flame resistant filler layer (5) including region, heart portion and border region, region, heart portion is surrounded by outer flame retardant insulation (4) cylindrical of three conductors (1) Region, is filled with chemical fiber filament in this region, border region then filled glass fiber rope.
High fire-retardance fire safe type lv power cable the most according to claim 1, it is characterised in that: described fire-retardant belting layer (6) being that low-smoke non-halogen flame-retardant band is wrapped to form, this low-smoke non-halogen flame-retardant band is to impregnate fire retardant glue on glass fiber tape and formed.
High fire-retardance fire safe type lv power cable the most according to claim 1, it is characterised in that: described oxygen barrier layer (7) is Ceramic silicon rubber extrudes layer.
High fire-retardance fire safe type lv power cable the most according to claim 1, it is characterised in that: described external sheath layer (8) Extrude for low smoke halogen-free flame-retardant polyolefin and form.
CN201620344447.5U 2016-04-23 2016-04-23 High fire-retardance fire safe type lv power cable Active CN205692608U (en)

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CN201620344447.5U CN205692608U (en) 2016-04-23 2016-04-23 High fire-retardance fire safe type lv power cable

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Application Number Priority Date Filing Date Title
CN201620344447.5U CN205692608U (en) 2016-04-23 2016-04-23 High fire-retardance fire safe type lv power cable

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110491590A (en) * 2019-08-26 2019-11-22 武汉新天地电工科技有限公司 LSOH anti-flaming cable
CN111627607A (en) * 2019-02-27 2020-09-04 云南多宝电缆集团股份有限公司 Halogen-free flame-retardant low-voltage cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111627607A (en) * 2019-02-27 2020-09-04 云南多宝电缆集团股份有限公司 Halogen-free flame-retardant low-voltage cable
CN110491590A (en) * 2019-08-26 2019-11-22 武汉新天地电工科技有限公司 LSOH anti-flaming cable

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